2d. Reactivity series Flashcards
Elements in the reactivity series
Potassium
Sodium
Lithium
Calcium
Magnessium
Aluminium
Zinc
Iron
Copper
Silver
Gold
What elements (reactivity series) react with acids?
From Potassium, to Iron
What elements (reactivity series) react with water?
Potassium
Sodium
Lithium
Calcium
When does iron rust?
When oxygen and water are present
3 Methods to prevent rusting
Barrier Method - prevents water and oxygen from getting to the iron
Galvanising - coat of zinc to prevent water and oxygen from reaching iron
Sacrificial Protection - Zinc blocks are attached to iron boat hulls and underground pipelines to act as sacrificial anodes.
Oxidation is…
Loss of electrons / Gain of oxygen
Reduction is…
Gain of electros / Loss of oxygen
Redox is…
A reaction including both oxidation and reduction
Metal + acid
Metal + Acid -> Salt + Hydrogen